---"Are you trying to set the management IP for the switch? If so, you could just plug the switching into an existing working network, let it get a DHCP address, and then change it via the dashboard."
here is a question: I am trying to setup management ip the switch.if i plug the switch into our network, it would get ip address. but how can i know the switch ip address? although i can know the assigned ip address range, i cannot know its the assigned ip address for me to logon to it